View allAll Photos Tagged testing.
Mamiya/Sekor 55mm f/1.4 M42 lens
Camera: Pentax K-50 on "bright" mode @ 100 ISO, WB 5500K
Edited the levels just for brightness adjustment.
A little back story... I got this lens from an old Mamiya camera that I found in a thrift shop. The end of the barrel is dented and it won't take a filter. The aperture was slow due to oil in the blade mechanism. After some time, I finally fully disassembled the lens and brought it back to it's former glory. Now the blades are snappy, and it's still tack-sharp after pulling it apart. Unfortunately, the camera it came off is still a mess.
Anywho... Just got my M42 to K mount adapter in the mail, and this lens is really good. I like the color rendition here. I did some tests at each aperture, also, and it performs well from f/2 all the way up to f/16. At f/1.4, it struggles a little, but is respectable at such a large aperture.
Next, I need to use this bad boy with some film. Great lens! Maybe I'll post my aperture tests when I get them together.
The DVT at Bo'ness out today for some testing and being moved by the yard shunter despite being capable of moving itself. (motors have been fitted to an axle of both front & rear bogies). Apparently all did not go to plan so back to the shed for some remedial work.
DVR's veteran loco S301 undergoing a test run along with T415 as backup after many years out of service.
DVR 2016 Phone Pictures.
Back in the era of film camera you'd take a picture like this and might not be sure if you're timing was good enought to get that Test Track car zoomed by, obviously mine was not, Peter really enjoyed this attraction.
I was not sure how this would work out so I just used a prewrapped bar/stem and a saddle I had lying around. The fit was pretty good on a short test so I got some better tape and sort of better saddle
Testing my cute pink canon! #garagesalefind #canon #expiredfilm #expiredfilmgallery #analogphotography #analoguecommunity #analoguepeople #analoguelove #analogueforever #beniceshootfilm #filmphotography #filmisnotdead #justshoot
My first foray into knitting with wire - this is 34 gauge jeweller's wire. Size UK10 needles, cast on 10, knitted a couple of rows, played around with decreases on the ends of the rows, ended up with knickers! Whole piece is about 3cm in width, 2cm in depth.
Love the scrawly randomness of it all, and the integrity knitting has given to the flimsy wire. It's squooshy and stretchy and I need t stop playing with it now ;)
Looking forward to the next project and throwing beads into the mix.
Testing out FreeNAS 8 on an AMD APU E-350 with a Highpoint Rocket RAID 622 eSATA PCIe 2.0 card. Along with a Rosewill external eSATA expansion.
Jolyon Palmer (GBR) Sahara Force India F1 VJM07 Test Driver..
Formula One Testing, Day One, Tuesday 25th November 2014. Yas Marina Circuit, Abu Dhabi, UAE.
Catalog #: 10_0016051
Title: Bomb Test
Date: 1920-1929
Additional Information: Aerial Bombing tests on ships
Tags: Bomb Test, Aerial Bombing tests on ships, 1920-1929
Repository: San Diego Air and Space Museum Archive
Test Track Queue Area - The entire queue area resembles an industrial testing laboratory filled with actual test equipment and vehicle components. The automotive tests performed on cars and trucks are illustrated in the Quality Zone, highlighting GM automotive technology, and the Safety Zone, displaying GM safety innovations and practices. Simulations include brake, wheel, suspension, airbag, seat belt and windshield tests.
Throughout the inner cue area there are lots of Snap-On Tools and GM test machines available for viewing. There are also TV monitors with short movies on testing cars and vehicles. You will wind and wind and wind through the building.
The queue area is LOUD! There are bangs, clangs, clanks, screeches -- whatever noises you could imagine in a testing laboratory for cars.
Test Track
Walt Disney World EPCOT Orlando Fl.
First test with the two lens, 12-35mm plus 2 makes this lens on the Lumix a 24-70mm. The 100-300mm plus 2 make this a 200-600mm lens. You can all so do a plus 4 making it a 400-1200mm lens.
Picture #3 was taking from the back of the studio set at +4 which is the 1200mm setting.
Taking these little globetrotters around for a spin. There are quite a few tweaks that I have already made since I rendered this test. The bounce of the backpack and cinnamon buns will be much better in the final. I suppose I should go ahead and post my boards, huh?
Testing an AVR controlled triac based dimmer circuit. This test used lower voltages and isolated power supplies but the real thing will be partially mains connected. Control parts are optoisolated for safety.
Testing out FreeNAS 8 on an AMD APU E-350 with a Highpoint Rocket RAID 622 eSATA PCIe 2.0 card. Along with a Rosewill external eSATA expansion.
This is more of a technical/experimental post, and I'd like to get viewers' opinions of the resultant image quality and technique.
I've seen more and more people experimenting with digital infrared (IR) photography, so I've be curious to try it myself. Looking at the Digital Infrared group here on flickr, one person mentioned using a long exposure with an IR filter on an unmodified digital SLR. I knew my XTi had an IR blocker over the sensor, so I wasn't sure how this would turn out. I was pleasantly surprised to see the results be close to what seems to be near-IR photography, perhaps not true IR. Especially after running the RAW shot thru Photoshop with an IR b&w layer, it looks similar to what I've seen film IR shots look like.
Your thoughts? What are some of the ways these shots differ from IR or near-IR shots done on IR film or modified/IR-sensitive digital cameras?
Photos, top to bottom, left to right:
* color RAW "infrared" exposure
* b&w (with red "filter") in-camera JPG of the RAW shot
* RAW shot with Photoshop infrared b&w layer, red channel at -20 instead of -40
Technical information:
* Canon Digital Rebel XTi/400D (unmodified)
* Canon EF 28mm/2.8 lens
* Opteka Infrared filter (I think it corresponds to an R72 filter)
* late afternoon (approx 5:30pm) light in late Summer
* manual exposure: 30s at f/4, ISO 100
Just messing around with portrait lighting. Thanks to my daughters - Ellen modeling, Caroline assisting.
Gelled SB-28 behind model. SB-600 with a short snoot up and behind model on right. DIY 28" soft box aiming down a bit camera right.
30"x40" white foam core reflector camera left.
A 30"x 40" black foam core panel helped block spill from the soft box onto the background. This was hand-held.
If I had been more serious about the shot, I could have dialed things in better, but C&C is welcome, if you have it.
Kaleidoscope image taken with phone & not edited at all. Used Flickr uploading without a 3rd party app to search for and upload 2 of my phone images.
Testing intraocular pressure during community screening. NIGERIA
©  Gideon Okorie CC BY-NC-SA 2.0
Published in: Community Eye Health Journal Vol. 34 No. 112 2021 www.cehjournal.org